The inbetween bike....again.Scorpa T.Ride

[Motu]

A concept that has been revisited many times since Bultaco first tried it with the Alpina - the half Trials/half trail bike.I wonder how it compares to the Pampera? I like....

http://www.scorpa-usa.com/ScorpaUSA/T.Ride/T.Ride.htm

[Ixion]

Inerestink. But *titanium* valves - bit OTT ? And only a 5 speed. I have this thing about wanting lots of gears on a multipurpose bike - cos you need a real low first for slow off raod stuff, a real high top for highway stuff, and not too big gaps in between.

[Motu]

It uses the Yamaha WR250f motor,they are 5 valve and of all the modern 4 stroke engines they seem to have the least valve problems.Lighter valves slamming into the seats I suppose.WR means wide ratio in Yamaha lingo,but I don't know if the ratios have been altered to suit it's intended purpose - it would be great on really,really,really tight trails,but any high speed use might get a bit scary.This class of bike is so desireable,but so hard to get right.

[MidnightMike]

Thats the best look'n dirt bike ive seen maybe its all the shinyness

[merv]

Inerestink. And only a 5 speed. I have this thing about wanting lots of gears on a multipurpose bike - cos you need a real low first for slow off raod stuff, a real high top for highway stuff, and not too big gaps in between.

This has been my problem since previously owning XR Hondas - they had such a good spread of gearing. So even though I was impressed enough to buy a WR 2 years ago, I have now bought a new XR since they are finally on the market with electric start.

The WR has a reasonably wide range of gears for a 5 speed and can do what it does because it revs to 13,000rpm or more giving it a wide range of power and speed because surprisingly it has an awesome power band from low through medium and up to high revs.

Gearing stock in road legal form the WR has a 14T/52T sprocket combination giving it the following overall ratios and theoretical speeds at 13,000 rpm:

1st 29.697:1 57km/hr
2nd 21.794 78
3rd 16.346 104
4th 12.973 131
5th 10.148 167

Compare this to the Honda XR250L which comes stock with 13T/40T sprocket combination, which I think compared to the XR250R with a 13T/48T combo or 13T/50T on the early ones. Now neither bike has a rev counter WR or XR but I doubt the XR would do over 9,000rpm when the numbers look like this:

1st 26.412 42
2nd 17.951 61
3rd 13.163 84
4th 10.330 107
5th 8.804 125
6th 7.764 142

The real issue is that the ratio (i.e. the spread) between 1st and 5th on the WR is 29.697/10.148 = 2.927, while the XR is 26.412/7.764 = 3.402. The old XR 200 had a ratio in this case of 3.527. The Suzuki DR250R I had the ratio was 2.925 which compares to the WR (but on a 6 speed), but the motor was too buzzy and it wouldn't rev to 13,000 so it had far too close a set of gears for a decent dirt bike. I wondered about a DRZ400 but their ratio is 2.647 - way too close.

You can see from those ratios nothing beats the XR Hondas which is why they were such good all round bikes - climb mountains and still cruise at 120 on the road. We got one because even though the WR is excellent, it isn't the best screaming along the road at such high revs for too many kms.

Like Motu I have been used to trials pulling up hills with low gearing - you can't do that on an overgeared bike with a close ratio box.

[WRT]

So light, and its a 4 stroke! Very cool. Lets hope they make it. Reminds me of the prototype posted up on here a little while ago from yamaha with a YZ250 engine in it - the trekker? Something like that. That looked cool, if there was one for sale I'd buy it for sure.

[clint640]

mmmm... I like, a trail/trials bike would be a nice complement to the big KTM, trouble is, instead of just being tempted to do wheelies everywhere while running errands in town like I am now, I'd also be tempted to ride over park benches, rock gardens, patrol car bonnets etc...

That yammy was called the Tricker, they actually made a toned down production version, mainly for asian markets I think. I'd be interesting to talk to someone who imports from japan about bringing one in, but I don't think they're as off road worthy as the Pampera or that T-ride.

Cheers
Clint

[WRT]

Ah yes, that was the one. The "toned-down" version wasnt a patch on the prototype . . . not that I've ridden either, obviously, but the prototype just looked the shizzle.

[NordieBoy]

Ah yes, that was the one. The "toned-down" version wasnt a patch on the prototype . . . not that I've ridden either, obviously, but the prototype just looked the shizzle.

There is the Tricker and the Tricker Pro.

http://fran.orcon.net.nz/tricker.mpg (6.2MB)